![Green walls in Harvard University](/sites/default/files/styles/resource_card_image_360x300_/public/2020-05/Green_wall_Harvard_University.jpg?itok=_ivWsw8S)
Green Walls
STEM Explained
Green walls use plant processes to improve air quality in buildings.
![Narwhals, polar bears and other common Arctic animals swim in the Arctic waters. Image © id-work, iStock](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/5755.jpg?itok=CVjIdhgO)
How are Arctic Animals in Canada Affected by Climate Change?
STEM Explained
Arctic animals have evolved to thrive in harsh arctic ecosystems, but the environmental footprint created by climate change is affecting their survival.
![Measuring Slope Of Soil Measuring Slope Of Soil](/sites/default/files/styles/resource_card_image_360x300_/public/NRCSIA99345_-_Iowa_%283383%29%28NRCS_Photo_Gallery%29.jpg?itok=wI4lPIbO)
Careers: Soil Scientist
Picture Collections
5 images some work that a scientist who studies the Earth's soil might do such as classifying types of soil and measuring the slope of soil
![Massive algal bloom](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/massive-algal-bloom.jpg?itok=pqgXB2yc)
Eutrophication: Why you should care about pond scum
STEM Explained
When fertilizers from agriculture get into lakes and rivers, big problems can result for aquatic ecosystems, food chains & webs!
![Measuring Changes To A Glacier Measuring Changes To A Glacier](/sites/default/files/styles/resource_card_image_360x300_/public/Scientists_measuring_the_terminus_of_Grinnell_Glacier_%284428358942%29.jpg?itok=n0YBXgJE)
Careers: Climatologist
Picture Collections
5 images of some work related to the scientific study of climate such as using instruments to measure changes in climates
![Feeding The Cows Feeding The Cows](/sites/default/files/styles/resource_card_image_360x300_/public/feeding.jpg?itok=vwI4pH4k)
Careers: Farmer
Picture Collections
5 images of some work that farmers do such as feeding cows, planting fields and harvesting grain
![Repotting](/sites/default/files/styles/resource_card_image_360x300_/public/repotting.jpg?itok=Ym70QlCE)
Careers: Horticulturalist
Picture Collections
5 images of some work that horticulturalists might do such as cultivating and caring for plants in various environments
![Landscaper Planting Landscaper Planting](/sites/default/files/styles/resource_card_image_360x300_/public/Landscaper-Planting-%5BSmall-Beds%5D.jpg?itok=pVHEjdIK)
Careers: Landscaper
Picture Collections
5 images of some work that landscapers might do such as planning, planting and maintaining gardens
![Close-up of an amethyst geode](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/geode_close-up.jpg?itok=e0eo8bjg)
What is a Crystal?
STEM Explained
Learn what makes a crystal a crystal.
![Timea Filer - Urban Forestry Field Technologist](/sites/default/files/styles/career_image/public/2019-08/Timea%20Filer_28.jpg?itok=fEY8NK3Q)
Timea Filer (Video)
Career Profiles
Urban Forestry Field Technologist
![Timea Filer | Urban Forestry Field Technician Timea Filer | Technicienne de terrain en foresterie urbaine](/sites/default/files/styles/career_image/public/Timea%20Filer_26.jpg?itok=isJEd7as)
Timea Filer
Career Profiles
Urban Forestry Field Technician, City of Guelph
![Heather Dover | Arborist Heather Dover | Arboricultrice](/sites/default/files/styles/career_image/public/Heather%20Dover_13.jpg?itok=kijAxCZD)
Heather Dover
Career Profiles
Arborist
![Andrew Newman | Mechanical Tree Harvester Andrew Newman | Mechanical Tree Harvester](/sites/default/files/styles/career_image/public/6215_13.jpg?itok=oLEDX3iw)
Andrew Newman (Video)
Career Profiles
Mechanical Tree Harvester
![Lacey Rose - County Forester, County of Renfrew](/sites/default/files/styles/career_image/public/2019-08/6207_14.jpg?itok=GugzDZsy)
Lacey Rose (Video)
County Forester
![Kelsey Privett - Géologue de projet d'exploration, Mine Lac des Iles](/sites/default/files/styles/career_image/public/2019-08/5138_14.jpg?itok=oEMP_f6H)
Kelsey Privett (Video)
Exploration Project Geologist